Optoma BX-DLWT2 Standard Short Zoom Lens for PRO8000, Europe ProScene EH7500, TH7500-NL

Optoma Genuine Lens BX-DLWT2 Standard Short Zoom is an OEM optical accessory for Optoma professional projectors. It is a standard-throw lens (Standard Throw) with a throw ratio of 1.22-1.47:1. The official compatibility list covers 3 models, so simply verify the projector model and panel size before installation—no adapter ring is needed. The value of an OEM lens lies not in the extra rows of figures in the specifications table, but in the fact that it is calibrated at the factory to the optical path and mount of that projector series. Once installed, the image circle, edge illumination, and focusing travel are all at their designed values, so there is no need to use keystone correction to compensate for image quality.

1. Lens Specifications

Brand	Optoma (Optoma)
Lens Model	BX-DLWT2 Standard Short Zoom
Throw Ratio	1.22-1.47:1
Product Type	Standard-throw lens (Standard Throw)
Compatible Models	3 models
Warranty	12 months; defects not caused by the user are covered by after-sales service, based on the date on the sales receipt

The above specifications are subject to the manufacturer's official specifications. For mechanical dimensions, flange distance, and mount type not shown in the specifications table, please contact us with the projector model for verification. Ordering based solely on a similar model carries the risk that the lens will not fit.

2. Throw Ratio and Installation Distance

The throw ratio is the ratio of the installation distance to the image width. This genuine lens is a zoom lens (1.22-1.47:1), so each image size corresponds to a range of installation distances, and the lens can focus anywhere within that range.

Image Size	Image Width	Required Installation Distance
100 inches	2.15 m	Approx. 2.62 – 3.16 m
120 inches	2.58 m	Approx. 3.15 – 3.79 m
150 inches	3.22 m	Approx. 3.93 – 4.74 m
200 inches	4.30 m	Approx. 5.25 – 6.32 m

The distances above are clear measurements from the front face of the lens to the screen and do not include space behind the projector for ventilation and cable connections. They are calculated for a 16:10 image; for actual installation, refer to on-site measurements and the manufacturer's manual.

Image quality differs at the two ends of the zoom range: at the near end of the range, the image is brighter and the edges are slightly softer; at the far end, the edges are sharper and brightness is slightly lower. Where the space permits, the middle of the range is recommended. After installation, first find the sharpest setting using the focus ring, then fine-tune the lens shift.

3. Compatible Projector Models (3 Models)

The table below is taken from the official compatibility list. Brightness and resolution are populated from the model database; where this information is unavailable, “—” is shown, with no assumptions made.

Model	Brightness	Resolution
PRO8000	5800 lumens	1920x1200
Europe ProScene EH7500	—	—
TH7500-NL	6000 lumens	1920x1200

To check whether a model outside the list is compatible, please send us photos of the projector nameplate and current lens—same-generation platforms often share the same mount, but the risk of ordering based on a similar model is not worth taking.

Throw Ratio by Projector Series

The nominal throw ratio for the same BX-DLWT2 Standard Short Zoom varies by projector series. Use the value corresponding to the series of the projector you actually own when selecting a lens.

Projector Series	Throw Ratio
—	1.22-1.47:1

4. Three Checks Before Replacement

• Confirm the projector's imaging chip and resolution.OEM lenses are designed for a specific panel size. If the panel specification differs, the image circle cannot cover the image, resulting in vignetting or edge light loss.
• Calculate the installation distance first.This lens has a nominal throw ratio of 1.22-1.47:1. Use the table in Section 2 to calculate the distance for your installation space. A prime lens offers no adjustment margin, and even a zoom lens should leave 10–20 cm of margin at both ends.
• Verify the mount and locking mechanism.The OEM lens is calibrated to the mount of the corresponding projector series. You must hear it lock into place after installation. A skewed image or soft edges is usually caused by incomplete locking, not by a problem with the lens itself.

If you are unsure, send us one photo of the projector nameplate and one photo of the current lens nameplate. Verification against the physical items is the safest approach.